Milind Dawande Srinagesh Gavirneni 0001 Sridhar R. Tayur Effective Heuristics for Multiproduct Partial Shipment Models. 337-352 2006 54 Oper. Res. 2 https://doi.org/10.1287/opre.1050.0263 db/journals/ior/ior54.html#DawandeGT06